Improvement in dredge-cans



H. 6. L0 CKWD 0 D.

Dredge-Bans.

Patented March 10. 1874.

FIG-,1.

ATTORNEYS.

UNITED STATES PATENT OFFICE.

HENRY C. LOOKWOOD, OF BALTIMORE, MARYLAND.

-IMPROVEMENT IN DREDGE-CANS.

Specification forming part of Letters Patent No. 14 8,472, dated March10, 1874; application filed November 29, 1873.

To all whom it may concern:

Be it known that'I, HENRY O. LOOKWOOD, of Baltimore, in the county ofBaltimore and State of Maryland, have invented a new and valuableImprovement in Dredge-Cans; and I do hereby declare that the followingis a full, clear, and exact description of the construction andoperation of the same, reference being had to the annexed drawings,making a part of this specification, and to the letters and figures ofreference marked thereon.

Figure 1 of the drawing is a perspective view of my dredge-can. Fig. 2is a vertical section of same. Fig. 3 is a top view of same.

This invention has relation to dredge-cans for containing spices andother pulverized substances, both for transportation and for domesticuse. It consists in a dredge-can cover having an opening through it, incombination with a circularly-slidin g plate, which is adapted forclosing said opening, and which is finely perforated for dredgingpurposes, said parts being constructed with teats or elevations anddepressions, so arranged that they serve to hold the sliding plate inproper position when adjusted, and also serve as registers for readilydetermining such positions, as will be hereinafter explained.

The following is a description of my improvement:

In the annexed drawings, A represents the body of the dredge-can, whichis cylindrical, and provided with a cover, B, having a convex top. Thiscover B has a heart-shaped hole, B, through it on one side of itscenter; and it also has a teat, 6, located as shown in Figs. 2 and 3,which may be formed by striking up the metal with a round pointed tool.0 designates a circularly-movable plate, which is centrally pivoted tothe cover B by means of a rivet and washer, a, and which is shaped so asto fit closely upon the convex head of this cover. The plate 0 issomewhat less than a full circle, so that when it is turned to theposition indicated in Fig. 3 it will expose the opening B through thecover B, and when it is turned one-quarter around from such position itwill completely close said opening.

This adjustable plate 0 is perforated at c, the perforations covering anarea equal to that of the opening B; and when these perforations areadjusted over said opening, as shown in Figs. 1 and 2, the device can beused for dredging purposes.

It will be observed that it is required to adjust the plate Gin threepositions with respect to the opening B, in all of which positions it isimportant to have this plate (J firmly held. To this end I construct theplate with three concavities, e e e, which are produced in the samemanner as the teat e on cover B, and which present their concave sidesto this teat when adjusted over it. One of the concavities e is arrangedin such relation to the perforations c that when they are adjusted overthe opening B such concavity will spring over the teat e and holdtheplate 0. The other two concavities e e are so arranged that when eitherone of them is adjusted over the teat c the hole B will be closed by theimperforated portion of the plate 0.

It will be seen that the teat e not only holds the plate 0 when it isadjusted in a proper position, but this teat, together with thedepressions or concavities 6, serves to indicate at once when the saidplate 0 is properly adjusted in any one of the three positions abovenamed.

I do not claim, broadly, a dredge can or box having a perforated head orcover and a circularly-adjustable plate pivoted thereto.

What I claim as new, and desire to secure by Letters Patent, is-

The holding projection e on perforated cover B, in combination withconcavities e in the circularly-adjustable and perforated plate or cap 0of a dredge-can, constructed substantially as described.

In testimony that I claim the above I have hereunto subscribed my namein the presence of two witnesses.

HENRY o. LooKwooD.

Witnesses GEORGE E. UPHAM, D. D. KANE.

